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El-Sawaf AK, Abdelgawad AM, Nassar AA, Elsherbiny DA. Immobilization of biosynthesized gallium nanoparticles in Polyvinylpyrrolidone/Sodium alginate films: Potent bactericidal protection against food spoilage bacteria. Int J Biol Macromol 2024; 274:133438. [PMID: 38936583 DOI: 10.1016/j.ijbiomac.2024.133438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/17/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024]
Abstract
The increasing threat of spoilage bacterial infections, driven by the resistance of bacteria to many antimicrobial treatments, is a significant worldwide public health problem, especially concerning food preservation. To tackle these difficulties, this research investigates the possibility of using packaging sheets that include antimicrobial agents and increasing the prolonged storage time by preventing the bioburden of foodborne pathogens. This approach uses metal nanoparticles' ability to prevent harmful bacteria that cause food spoiling. Gallium nanoparticles (GaNPs) were created using a water-based extract from Andrographis paniculata leaves as a bioreducing agent. The GaNPs were added to a film made of sodium alginate (SA) and polyvinylpyrrolidone (PVP). The study showed that incorporating GaNPs into polymer films resulted in films with a desirable contact angle and decreased water vapor permeability. Significantly, the developed films demonstrated increased efficiency against E.coli O157 compared to other species. Also, it exhibited increased vulnerability to bacterial strains at the biofilm stage, surpassing PVP-SA/GaNPs-0. Remarkably, the toxicity tests showed that the films exhibited no cytotoxicity. Overall, the films indicated their potential for avoiding bacterial bioburden, prolonging the shelf life of perishable products, and contributing to diverse antimicrobial applications in the food industry.
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Affiliation(s)
- Ayman K El-Sawaf
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Alkharj 11942, Saudi Arabia; Department of Chemistry, Faculty of Science, Menoufia University, Shibin El-Kom, Egypt
| | - Abdelrahman M Abdelgawad
- Textile Research and Technology Institute, National Research Center (Affiliation ID: 60014618), 12622, Dokki, Giza, Egypt; Textile Engineering Chemistry and Science Department, Wilson College of Textiles, North Carolina State University, Raleigh, NC, USA
| | - Amal A Nassar
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Alkharj 11942, Saudi Arabia
| | - Dalia A Elsherbiny
- Department of Chemistry, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Alkharj 11942, Saudi Arabia; Department of Chemistry, Faculty of Science, Menoufia University, Shibin El-Kom, Egypt.
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2
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Murugan C, Yang S, Park S. Modulating nanostructures with polyvinylpyrrolidone: Design and development of a porous, biocompatible, and pH-Stable core-shell magnetic microrobot for demonstrating drug absorption from wastewater. CHEMOSPHERE 2024; 362:142590. [PMID: 38871195 DOI: 10.1016/j.chemosphere.2024.142590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/08/2024] [Accepted: 06/10/2024] [Indexed: 06/15/2024]
Abstract
Increased antineoplastic drug concentrations in wastewater stem from ineffective treatment plants and increased usage. Although microrobots are promising for pollutant removal, they face hurdles in developing a superstructure with superior adsorption capabilities, biocompatibility, porosity, and pH stability. This study focused on adjusting the PVP concentration from 0.05 to 0.375 mM during synthesis to create a favorable CMOC structure for drug absorption. Lower PVP concentrations (0.05 mM) yielded a three-dimensional nanoflower structure of CaMoO4 and CuS nanostructures, whereas five-fold concentrations (0.25 mM) produced a porous structure with a dense CuS core encased in a transparent CaMoO4 shell. The magnetically movable and pH-stable COF@CMOC microrobot, achieved by attaching CMOC to cobalt ferrite (CoF) NPs, captured doxorubicin efficiently, with up to 57 % efficiency at 200 ng/mL concentration for 30 min, facilitated by electrostatic interaction, hydrogen bonding, and pore filling of DOX. The results demonstrated that DOX removal through magnetic motion showed superior performance, with an estimated improvement of 57% compared to stirring conditions (17 %). A prototype PDMS microchannel system was developed to study drug absorption and microrobot recovery. The CaMoO4 shell of the microrobots exhibited remarkable robustness, ensuring long-lasting functionality in harsh wastewater environments and improving biocompatibility while safeguarding the CuS core from degradation. Therefore, microrobots are a promising eco-friendly solution for drug extraction. These microrobots show promise for the selective removal of doxorubicin from contaminated wastewater.
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Affiliation(s)
- Chandran Murugan
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Seungun Yang
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Sukho Park
- Department of Robotics and Mechatronics Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea.
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3
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Mudhafar M, Zainol I, A.J. A, Abd MY, Alsailawi H, Ghazaly NM, Hussein RM, Zorah M. The effect of fish collagen on the silver nanoparticles sizes and shapes using modified microwave-assisted green synthesis method and their antibacterial activities. Heliyon 2024; 10:e32837. [PMID: 39022059 PMCID: PMC11252884 DOI: 10.1016/j.heliyon.2024.e32837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 05/02/2024] [Accepted: 06/10/2024] [Indexed: 07/20/2024] Open
Abstract
This work aimed to produce silver nanoparticles (AgNPs) by efficient green synthesis techniques, namely rapid green synthesis and modified microwave-assisted green synthesis methods. The study used fish scale collagen (FsCol) as a stabilizer to assess its impact on the dimensions and configurations of AgNPs. Four samples were prepared with varying concentrations of FsCol. The synthesized AgNPs were characterized using Ultraviolet-visible (UV-vis) spectroscopy, scanning electron microscope (SEM), energy dispersive X-ray analysis (EDX), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray diffraction analysis (XRD), Dynamic Light Scattering (DLS), and Transmission electron microscopy (TEM) techniques. The obtained sizes are as follows: 85 ± 15 nm, 70 ± 10 nm, 50 ± 10 nm, and 28-40 nm. The UV-vis spectroscopy revealed a shift in the absorbance peaks from 400 to 446 nm. The SEM method showed a spherical form in all of the samples. The element silver was detected in the EDX examination, along with the presence of oxygen (O) and carbon (C). The FTIR analysis revealed that the peaks seen at 3307 cm-1 were attributed to the stretching of O-H bonds, while the mountain at 1638 cm-1 belonged to the extension of N-H bonds (amide A). Additionally, the band observed at 1638 cm-1 indicated the presence of CO bonds (amide I).The 2140 cm-1 and 1302 cm-1 peaks may be attributed to the C2H2 group present in the plant components and the N-H bending (Amide III), respectively. The XRD pattern indicates that the synthesis process resulted in the formation of crystalline AgNPs. The particle sizes measured using DLS were 121 nm, 96.36 nm, 82.3 nm, and 48.50 nm. The TEM approach revealed that all samples had a spherical morphology with varying sizes: 80-100 nm, 50-80 nm, 40-60 nm, and 28-42 nm. The synthesized AgNPs were tested for their antibacterial properties against the pathogenic pathogens Escherichia coli (E.coli) and Staphylococcus aureus (S. aureus). The influence of AgNPs on bacteria was amplified as the particle size decreased, resulting in a larger inhibitory zone for the smaller particles.
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Affiliation(s)
- Mustafa Mudhafar
- Department of Medical Physics, Faculty of Medical Applied Sciences, University of Kerbala, 56001, Karbala, Iraq
- Department of Anesthesia Techniques and Intensive Care, Al-Taff university college, 56001, Kerbala, Iraq
| | - Ismail Zainol
- Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900 Tanjung Malim, Perak, Malaysia
| | - Ameer A.J.
- Al-Zahraa University for Women, Karbala, Iraq
| | - Mena Y. Abd
- Department of biochemistry, Faculty of Medicine, University of Kerbala, 56001, Karbala, Iraq
| | - H.A. Alsailawi
- Department of biochemistry, Faculty of Medicine, University of Kerbala, 56001, Karbala, Iraq
- Department of Anesthesia Techniques, AlSafwa University College, Karbala, Iraq
| | - Nouby M. Ghazaly
- Technical College, Imam Ja'afar Al-Sadiq University, Baghdad, Iraq
- Mechanical Engineering, Faculty of Engineering, South Valley University, Egypt
| | | | - Mohammed Zorah
- Department of C. T. E, Imam Al-Kadhum College, Baghdad, Iraq
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Tunç T, Hepokur C, Kari̇per A. Synthesis and Characterization of Paclitaxel-Loaded Silver Nanoparticles: Evaluation of Cytotoxic Effects and Antimicrobial Activity. Bioinorg Chem Appl 2024; 2024:9916187. [PMID: 38380152 PMCID: PMC10878759 DOI: 10.1155/2024/9916187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/06/2024] [Accepted: 02/05/2024] [Indexed: 02/22/2024] Open
Abstract
Carrier system therapies based on combining cancer drugs with nanoparticles have been reported to control tumor growth and significantly reduce the side effects of cancer drugs. We thought that paclitaxel-loaded silver nanoparticles (AgNPs-PTX) were the right carrier to target cancer cells. We also carried out antimicrobial activity experiments as systems formed with nanoparticles have been shown to have antimicrobial activity. In our study, we used easy-to-synthesize and low-cost silver nanoparticles (AgNPs) with biocatalytic and photocatalytic advantages as drug carriers. We investigated the antiproliferative activities of silver nanoparticles synthesized by adding paclitaxel on MCF-7 (breast adenocarcinoma cell line), A549 (lung carcinoma cell line), C6 (brain glioma cell line) cells, and healthy WI-38 (fibroblast normal cell line) cell lines and their antimicrobial activities on 10 different microorganisms. The synthesized AgNPs and AgNPs-PTX were characterized by dynamic light scattering (DLS), scanning transmission electron microscopy, UV-visible spectroscopy, Fourier transform infrared spectroscopy, and X-ray spectroscopy. The nanoparticles were spherical in shape, with AgNPs ranging in size from 2.32 to 5.6 nm and AgNPs-PTXs from 24.36 to 58.77 nm. AgNPs demonstrated well stability of -47.3 mV, and AgNPs-PTX showed good stability of -25.4 mV. The antiproliferative effects of the synthesized nanoparticles were determined by XTT (tetrazolium dye; 2,3-bis-(2-methoxy-4-nitro-5-sulfenyl)-(2H)-tetrazolium-5-carboxanilide), and the proapoptotic effects were determined by annexin V/propidium iodide (PI) staining. The effect of AgNPs-PTX was more effective, and anticancer activity was higher than PTX in all cell lines. When selectivity indices were calculated, AgNPs-PTX was more selective in the A549 cell line (SI value 6.53 μg/mL). AgNPs-PTX was determined to increase apoptosis cells by inducing DNA fragmentation. To determine the antimicrobial activity, the MIC (minimum inhibitory concentration) test was performed using 8 different bacteria and 2 different fungi. Seven of the 10 microorganisms tested exhibited high antimicrobial activity according to the MIC ≤100 μg/mL standard, reaching MIC values below 100 μg/mL and 100 μg/mL for both AgNPs and AgNPs-PTX compared to reference sources. Compared to standard antibiotics, AgNPs-PTX was highly effective against 4 microorganisms.
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Affiliation(s)
- Tutku Tunç
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Sivas Cumhuriyet University, Sivas, Türkiye
| | - Ceylan Hepokur
- Department of Biochemistry, Faculty of Pharmacy, Sivas Cumhuriyet University, Sivas, Türkiye
| | - Afşin Kari̇per
- Department Mathematics and Science Education, Faculty of Education, Erciyes University, Kayseri, Türkiye
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Sharova EA, Falchevskaya AS, Leonchuk SS, Redkov AV, Nikolaev V, Vinogradov VV. Liquid metal-mediated fabrication of metalloid nanoarchitectures. Chem Commun (Camb) 2023; 59:10928-10931. [PMID: 37605935 DOI: 10.1039/d3cc02882h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
By overcoming all conventional limitations associated with the synthesis of metalloid micro- and nanoparticles in aqueous media, we present a new one-step approach to the synthesis of highly crystalline metalloid hollow architectures. The liquid metal-mediated synthesis of Ge- and Sb-based hollow structures with satisfactory reaction kinetics at room temperature and normal pressure is presented.
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Affiliation(s)
- Ekaterina A Sharova
- ITMO University, "Solution Chemistry of Advanced Materials and Technologies" (SCAMT), International Institute, Saint Petersburg 191002, Russian Federation.
| | - Aleksandra S Falchevskaya
- ITMO University, "Solution Chemistry of Advanced Materials and Technologies" (SCAMT), International Institute, Saint Petersburg 191002, Russian Federation.
| | - Sergei S Leonchuk
- ITMO University, "Solution Chemistry of Advanced Materials and Technologies" (SCAMT), International Institute, Saint Petersburg 191002, Russian Federation.
| | - Alexey V Redkov
- Institute for Problems in Mechanical Engineering RAS, Saint-Petersburg, 199178, Russian Federation
| | - Vitaly Nikolaev
- ITMO University, "Solution Chemistry of Advanced Materials and Technologies" (SCAMT), International Institute, Saint Petersburg 191002, Russian Federation.
| | - Vladimir V Vinogradov
- ITMO University, "Solution Chemistry of Advanced Materials and Technologies" (SCAMT), International Institute, Saint Petersburg 191002, Russian Federation.
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Tatar AS, Boca S, Falamas A, Cuibus D, Farcău C. Self-assembled PVP-gold nanostar films as plasmonic substrates for surface-enhanced spectroscopies: influence of the polymeric coating on the enhancement efficiency. Analyst 2023; 148:3992-4001. [PMID: 37526256 DOI: 10.1039/d3an00682d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
Colloidal nanoparticles exhibiting anisotropic morphologies are preferred in the structural design of spectroscopically active substrates due to the remarkable optical properties of this type of nano-object. In the particular case of star-like nanoparticles, their sharp tips can act as antennae for capturing and amplifying the incident light, as well as for enhancing the light emitted by nearby fluorophores or the scattering efficiency of Raman active molecules. In the current work, we aimed to implement such star-shaped nanoparticles in the fabrication of nanoparticle films and explore their use as solid plasmonic substrates for surface-enhanced optical spectroscopies. High-density, compact and robust self-assembled gold nanostar films were prepared by directly depositing them from aqueous colloidal suspension on polystyrene plates through convective self-assembly. We investigated the role of the polymeric coating, herein polyvinylpyrrolidone (PVP), in the particle assembly process, the resulting morphology and consequently, the plasmonic response of the obtained films. The efficacy of the plasmonic films as dual-mode surface-enhanced fluorescence (SEF) and surface-enhanced Raman scattering (SERS) substrates was evidenced by testing Nile Blue A (NB) and Rhodamine 800 (Rh800) molecular chromophores under visible (633 nm) versus NIR (785 nm) laser excitation. Steady-state and time-resolved fluorescence investigations highlight the fluorescence intensity and fluorescence lifetime modification effects. The experimental results were corroborated with theoretical modelling by finite-difference time-domain (FDTD) simulations. Furthermore, to prove the extended applicability of the proposed substrates in the detection of biologically relevant molecules, we tested their SERS efficiency for sensing metanephrine, a metabolite currently used for the biochemical diagnosis of neuroendocrine tumors, at concentration levels similar to other catecholamine metabolites.
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Affiliation(s)
- Andra-Sorina Tatar
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania.
| | - Sanda Boca
- Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, 42 Treboniu Laurian, 400271 Cluj-Napoca, Romania.
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania.
| | - Alexandra Falamas
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania.
| | - Denisa Cuibus
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania.
| | - Cosmin Farcău
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat, 400293 Cluj-Napoca, Romania.
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7
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Behboudi A, Mohammadi T, Ulbricht M. High performance antibiofouling hollow fiber polyethersulfone nanocomposite membranes incorporated with novel surface-modified silver nanoparticles suitable for membrane bioreactor application. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.11.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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8
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Potdar RP, Khollam YB, Shaikh SF, More PS, Rana AUHS. Polyvinylpyrrolidone-Capped Silver Nanoparticles for Highly Sensitive and Selective Optical Fiber-Based Ammonium Sensor. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193373. [PMID: 36234507 PMCID: PMC9565296 DOI: 10.3390/nano12193373] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 05/28/2023]
Abstract
Herein, aqueous ammonium sensing characteristics of polyvinylpyrrolidone (PVP) capped silver nanoparticles (Ag-NPs) coated optical fiber-based sensors are presented. The PVP-capped Ag-NPs were prepared using cold and modified polyol synthesis methods. Aqueous ammonium detection was carried out by the surface plasmon resonance (SPR) effect observed in the Ag-NPs coated optical fiber system. The effect of cold and modified polyol synthesis methods on optical sensing performance was studied. The optical fiber cladding was modified with PVP-capped Ag-NPs according to the standard protocol for sensing investigation. The probe sensing response was analyzed for varying concentrations of ammonium ions on red, green, and blue LEDs. The sensor characteristics, viz., sensing response, repeatability, calibration curve, and ambient light effect, were investigated for PVP capped Ag-NPs coated optical fiber-based sensor. The PVP capped Ag-NPs synthesized via the polyol synthesis method showed a detection limit of 48.9 mM, 1.33 mV/M sensitivity, and an excellent linear relationship (R2 = 0.9992) between voltage and ammonium ion concentration in the range of 0.054-13.4 M concentration. On the other hand, PVP capped Ag-NPs synthesized using the cold synthesis method showed a detection limit of 159.4 mM, a sensitivity of 0.06 mV/M, and a poor linear relationship (R2 = 0.4588) between voltage and ammonium ion concentration in the range of 0.054-13.4 M concentration. The results indicate that the PVP-capped Ag-NPs synthesized using the polyol synthesis method exhibit enhanced ammonium ion sensing compared to the cold synthesis method.
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Affiliation(s)
- Revati P. Potdar
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai 400032, India
| | - Yogesh B. Khollam
- Research Centre in Physics, Department of Physics, Baburaoji Gholap College, Sangvi, Pune 411027, India
| | - Shoyebmohamad. F. Shaikh
- Department of Chemistry, College of Science, Bld-5, King Saud University, Riyadh 11451, Saudi Arabia
| | - Pravin S. More
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai 400032, India
| | - Abu ul Hassan S. Rana
- Department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
- Department of Obstetrics and Gynecology, The University of Melbourne, Parkville, VIC 3010, Australia
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9
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Gomaa OM, Jassim AY, Chanda A. Bioremoval of PVP-coated silver nanoparticles using Aspergillus niger: the role of exopolysaccharides. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:31501-31510. [PMID: 35001269 PMCID: PMC8743098 DOI: 10.1007/s11356-021-18018-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 12/05/2021] [Indexed: 05/10/2023]
Abstract
Extensive use of engineered nanoparticles has led to their eventual release in the environment. The present work aims to study the removal of Polyvinylpyrrolidone-coated silver nanoparticles (PVP-Ag-NPs) using Aspergillus niger and depict the role of exopolysaccharides in the removal process. Our results show that the majority of PVP-Ag-NPs were attached to fungal pellets. About 74% and 88% of the PVP-Ag-NPs were removed when incubated with A. niger pellets and exopolysaccharide-induced A. niger pellets, respectively. Ionized Ag decreased by 553 and 1290-fold under the same conditions as compared to stock PVP-Ag-NP. PVP-Ag-PVP resulted in an increase in reactive oxygen species (ROS) in 24 h. Results show an increase in PVP-Ag-NPs size from 28.4 to 115.9 nm for A. niger pellets and 160.3 nm after removal by stress-induced A. niger pellets and further increased to 650.1 nm for in vitro EPS removal. The obtained findings show that EPS can be used for nanoparticle removal, by increasing the net size of nanoparticles in aqueous media. This will, in turn, facilitate its removal through conventional filtration techniques commonly used at wastewater treatment plants.
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Affiliation(s)
- Ola M Gomaa
- Microbiology Department, National Center for Radiation Research and Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo, Egypt.
| | - Amar Yasser Jassim
- SmartState Center for Environmental Nanoscience and Risk (CENR), Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, USA
- Marine Science Center, University of Basrah, Basrah, Iraq
| | - Anindya Chanda
- Integrative Mycology Lab, Department of Environmental Health Sciences, University of South Carolina, Columbia, SC, USA
- Myclogics LLC., Alexandria, VA, USA
- Broadwell College of Business and Economics, Fayetteville State University, Fayetteville, NC, USA
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10
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Tripathi N, Goshisht MK. Recent Advances and Mechanistic Insights into Antibacterial Activity, Antibiofilm Activity, and Cytotoxicity of Silver Nanoparticles. ACS APPLIED BIO MATERIALS 2022; 5:1391-1463. [PMID: 35358388 DOI: 10.1021/acsabm.2c00014] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The substantial increase in multidrug-resistant (MDR) pathogenic bacteria is a major threat to global health. Recently, the Centers for Disease Control and Prevention reported possibilities of greater deaths due to bacterial infections than cancer. Nanomaterials, especially small-sized (size ≤10 nm) silver nanoparticles (AgNPs), can be employed to combat these deadly bacterial diseases. However, high reactivity, instability, susceptibility to fast oxidation, and cytotoxicity remain crucial shortcomings for their uptake and clinical application. In this review, we discuss various AgNPs-based approaches to eradicate bacterial infections and provide comprehensive mechanistic insights and recent advances in antibacterial activity, antibiofilm activity, and cytotoxicity (both in vitro and in vivo) of AgNPs. The mechanistic of antimicrobial activity involves four steps: (i) adhesion of AgNPs to cell wall/membrane and its disruption; (ii) intracellular penetration and damage; (iii) oxidative stress; and (iv) modulation of signal transduction pathways. Numerous factors affecting the bactericidal activity of AgNPs such as shape, size, crystallinity, pH, and surface coating/charge have also been described in detail. The review also sheds light on antimicrobial photodynamic therapy and the role of AgNPs versus Ag+ ions release in bactericidal activities. In addition, different methods of synthesis of AgNPs have been discussed in brief.
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Affiliation(s)
- Neetu Tripathi
- Department of Chemistry, Guru Nanak Dev University, Amritsar, Punjab 143005, India
| | - Manoj Kumar Goshisht
- Department of Chemistry, Government Naveen College Tokapal, Bastar, Chhattisgarh 494442, India
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11
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Infiltrated thin film structure with hydrogel-mediated precursor ink for durable SOFCs. Sci Rep 2021; 11:7109. [PMID: 33782467 PMCID: PMC8007576 DOI: 10.1038/s41598-021-86572-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/15/2021] [Indexed: 01/01/2023] Open
Abstract
The hydrogel of biomolecule-assisted metal/organic complex has the superior ability to form a uniform, continuous, and densely integrated structure, which is necessary for fine thin film fabrication. As a representative of nature-originated polymers with abundant reactive side chains, we select the gelatin molecule as an element for weaving the metal cations. Here, we demonstrate the interaction between the metal cation and gelatin molecules, and associate it with coating quality. We investigate the rheological property of gelatin solutions interacting with metal cation from the view of cross-linking and denaturing of gelatin molecules. Also, we quantitatively compare the corresponding interactions by monitoring the absorbance spectrum of the cation. The coated porous structure is systematically investigated from the infiltration of gelatin-mediated Gd0.2Ce0.8O2-δ (GDC) precursor into Sm0.5Sr0.5CoO3-δ (SSC) porous scaffold. By applying the actively interacting gelatin-GDC system, we achieve a thin film of GDC on SSC with excellent uniformity. Compare to the discrete coating from the typical infiltration process, the optimized thin film coated structure shows enhanced performance and stability.
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12
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Pandey P, Deshpande P, Shirolkar MM, Patil Y, Tiwari AK, Kulkarni A. Augmented
Listeria monocytogenes
Biofilm Architecture Disruption and Synergistic effect of Antibiotics on Bacterial Species by Biosynthesized Silver Nanoparticles. ChemistrySelect 2021. [DOI: 10.1002/slct.202004687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Prem Pandey
- Symbiosis Center for Nanoscience and Nanotechnology (SCNN) Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115 Maharashtra India
| | - Pooja Deshpande
- Symbiosis School of Biological Sciences (SSBS), Symbiosis International Deemed University) (SIU), Lavale, Pune 412115 Maharashtra India
| | - Mandar M. Shirolkar
- Symbiosis Center for Nanoscience and Nanotechnology (SCNN) Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115 Maharashtra India
| | - Yogesh Patil
- Symbiosis Centre for Research and Innovation (SCRI) Symbiosis International (Deemed University) Pune 412115 India
| | - Amit K. Tiwari
- Symbiosis Centre for Research and Innovation (SCRI) Symbiosis International (Deemed University) Pune 412115 India
| | - Atul Kulkarni
- Symbiosis Center for Nanoscience and Nanotechnology (SCNN) Symbiosis International (Deemed University) (SIU), Lavale, Pune 412115 Maharashtra India
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13
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Synthesis of highly stable and dispersed silver nanoparticles/poly(vinyl alcohol-co-ethylene glycol)/poly(3-aminophenyl boronic acid) nanocomposite: Characterization and antibacterial, hemolytic and cytotoxicity studies. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.05.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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14
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Optimization of synthesis for shape and size controlled silver nanoparticles using response surface methodology. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124647] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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15
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Investigation on the impact of different stabilizing agents on structural, optical properties of Ag@SnO2 core - shell nanoparticles and its biological applications. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112951] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yilmaz A, Yilmaz M. Bimetallic Core-Shell Nanoparticles of Gold and Silver via Bioinspired Polydopamine Layer as Surface-Enhanced Raman Spectroscopy (SERS) Platform. NANOMATERIALS 2020; 10:nano10040688. [PMID: 32260586 PMCID: PMC7221921 DOI: 10.3390/nano10040688] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/26/2020] [Accepted: 04/02/2020] [Indexed: 12/18/2022]
Abstract
Despite numerous attempts to fabricate the core-shell nanoparticles, novel, simple, and low-cost approaches are still required to produce these efficient nanosystems. In this study, we propose the synthesis of bimetallic core-shell nanoparticles of gold (AuNP) and silver (AgNP) nanostructures via a bioinspired polydopamine (PDOP) layer and their employment as a surface-enhanced Raman spectroscopy (SERS) platform. Herein, the PDOP layer was used as an interface between nanostructures as well as stabilizing and reducing agents for the deposition of silver ions onto the AuNPs. UV-vis absorption spectra and electron microscope images confirmed the deposition of the silver ions and the formation of core-shell nanoparticles. SERS activity tests indicated that both the PDOP thickness and silver deposition time are the dominant parameters that determine the SERS performances of the proposed core-shell system. In comparison to bare AuNPs, more than three times higher SERS signal intensity was obtained with an enhancement factor of 3.5 × 105.
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Affiliation(s)
- Asli Yilmaz
- Department of Molecular Biology and Genetics, Ataturk University, Erzurum 25240, Turkey;
- East Anatolia High Technology Application and Research Center (DAYTAM), Ataturk University, Erzurum 25240, Turkey
| | - Mehmet Yilmaz
- East Anatolia High Technology Application and Research Center (DAYTAM), Ataturk University, Erzurum 25240, Turkey
- Department of Chemical Engineering, Ataturk University, Erzurum 25240, Turkey
- Department of Nanoscience and Nanoengineering, Ataturk University, Erzurum 25240, Turkey
- Correspondence:
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17
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Ribeiro AI, Modic M, Cvelbar U, Dinescu G, Mitu B, Nikiforov A, Leys C, Kuchakova I, De Vrieze M, Felgueiras HP, Souto AP, Zille A. Effect of Dispersion Solvent on the Deposition of PVP-Silver Nanoparticles onto DBD PlasmaTreated Polyamide 6,6 Fabric and Its Antimicrobial Efficiency. NANOMATERIALS 2020; 10:nano10040607. [PMID: 32224934 PMCID: PMC7221693 DOI: 10.3390/nano10040607] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/16/2020] [Accepted: 03/21/2020] [Indexed: 01/02/2023]
Abstract
Polyvinylpyrrolidone-coated silver nanoparticles (PVP-AgNPs) dispersed in ethanol, water and water/alginate were used to functionalize untreated and dielectric barrier discharge (DBD) plasma-treated polyamide 6,6 fabric (PA66). The PVP-AgNPs dispersions were deposited onto PA66 by spray and exhaustion methods. The exhaustion method showed a higher amount of deposited AgNPs. Water and water-alginate dispersions presented similar results. Ethanol amphiphilic character showed more affinity to AgNPs and PA66 fabric, allowing better uniform surface distribution of nanoparticles. Antimicrobial effect in E. coli showed good results in all the samples obtained by exhaustion method but using spray method only the DBD plasma treated samples displayed antimicrobial activity (log reduction of 5). Despite the better distribution achieved using ethanol as a solvent, water dispersion samples with DBD plasma treatment displayed better antimicrobial activity against S. aureus bacteria in both exhaustion (log reduction of 1.9) and spray (methods log reduction of 1.6) due to the different oxidation states of PA66 surface interacting with PVP-AgNPs, as demonstrated by X-ray Photoelectron Spectroscopy (XPS) analysis. Spray method using the water-suspended PVP-AgNPs onto DBD plasma-treated samples is much faster, less agglomerating and uses 10 times less PVP-AgNPs dispersion than the exhaustion method to obtain an antimicrobial effect in both S. aureus and E. coli.
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Affiliation(s)
- Ana I. Ribeiro
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
| | - Martina Modic
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia; (M.M.); (U.C.)
| | - Uros Cvelbar
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia; (M.M.); (U.C.)
| | - Gheorghe Dinescu
- National Institute for Lasers, Plasma and Radiation Physics, Strada Atomiștilor 409, 077125 Măgurele, Romania; (G.D.); (B.M.)
| | - Bogdana Mitu
- National Institute for Lasers, Plasma and Radiation Physics, Strada Atomiștilor 409, 077125 Măgurele, Romania; (G.D.); (B.M.)
| | - Anton Nikiforov
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Christophe Leys
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Iryna Kuchakova
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Mike De Vrieze
- Centexbel Ghent, Technologie Park 7, 9052 Ghent, Belgium; (A.N.); (C.L.); (I.K.); (M.D.V.)
| | - Helena P. Felgueiras
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
| | - António P. Souto
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
| | - Andrea Zille
- 2C2T - Centro de Ciência e Tecnologia Têxtil, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal; (A.I.R.); (H.P.F.); (A.P.S.)
- Correspondence:
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18
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Ramalingam V, Raja S, Harshavardhan M. In situ one-step synthesis of polymer-functionalized palladium nanoparticles: an efficient anticancer agent against breast cancer. Dalton Trans 2020; 49:3510-3518. [PMID: 32107506 DOI: 10.1039/c9dt04576g] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Breast cancer is the most common malignancy among women worldwide, and researchers are working to discover effective treatments to eradicate breast cancer. In the present study, we prepared PVP-functionalized palladium nanoparticles (PVP-PdNPs) for the treatment of human breast cancer MCF7 cells. Initially, the PVP-functionalized PdNPs were synthesized by an in situ method and confirmed with DRS-UV spectrometric analysis. Further, FTIR and Raman spectroscopic analyses showed the association of PVP with PdNPs by showing the vibrational mode of the PdNPs and C[double bond, length as m-dash]O stretch and CH2 band modes of PVP. Microscopic analysis showed that the PVP-PdNPs have a narrow size distribution with spherical shapes and a size range between 9 and 15 nm. The SAED and XRD patterns confirmed that the crystalline structure is face-centered cubic in nature, and EDAX mapping confirmed the formulation of PVP on the surface of the PdNPs. Further, in vitro MTT assay analysis showed that the PVP-PdNPs exhibit excellent cytotoxic activity against human breast cancer MCF7 cells in a dose-dependent manner. The PVP-PdNPs generate continuous ROS in the mitochondria; this leads to the damage of the mitochondrial membrane potential and nuclear DNA and induces apoptosis through caspase3/7 enzymatic activity. Together, the PVP-PdNPs are a promising potential anticancer agent against human breast cancer.
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Kim SS, Lee JA, Yeo MK. Reduction in Toxicity of Nano-Ag-Polyvinyl-pyrrolidone Using Hydra Proteins and Peptides during Zebrafish Embryogenesis. NANOMATERIALS 2019; 9:nano9091210. [PMID: 31462001 PMCID: PMC6780337 DOI: 10.3390/nano9091210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 08/12/2019] [Accepted: 08/23/2019] [Indexed: 12/21/2022]
Abstract
Hydra magnipapillata cells reduce the toxicity of silver nanomaterials to zebrafish (Danio rerio) embryos. In this study, we investigated whether Hydra protein (HP) and Hydra basal disc peptide (Hym176) materials reduce nano-Ag-polyvinylpyrrolidone (N-Ag-PVP) toxicity during embryogenesis of the nanosensitive organism zebrafish. Protein (HP) was extracted from Hydra, and peptide (Hym176) was extracted from the hydra basal disc, which is attractive to nanomaterials and related to the immune system. The experimental conditions were exposure to N-Ag-PVP, HP, N-Ag-PVP+HP, Hym176, or N-Ag-PVP+Hym176 during embryo development. N-Ag-PVP+HP group showed lower toxicity than N-Ag-PVP group. In addition, in the N-Ag-PVP+HP group formed aggregated nanomaterials (≥200 nm size) through electrostatic bonding. In the gene expression profile, HP group differed in gene expression profile compared the other experimental groups and it was no genetic toxicity. HP showed a tendency to reduce side effects and abnormal gene expression produced by N-Ag-PVP with no evidence of inherent toxicity. Considering the potential nanotoxicity effects of released nanomaterials on the ecosystem, the reduction of nanotoxicity observed with HP natural materials should be regarded with great interest in terms of the overall health of the ecosystem.
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Affiliation(s)
- Soon Seok Kim
- Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do Seoul 17104, Korea
| | - Jin Ah Lee
- Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do Seoul 17104, Korea
| | - Min-Kyeong Yeo
- Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do Seoul 17104, Korea.
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20
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Kotlhao K, Lawal IA, Moutloali RM, Klink MJ. Antifouling Properties of Silver-Zinc Oxide Polyamide Thin Film Composite Membrane and Rejection of 2-Chlorophenol and 2,4-Dichlorophenol. MEMBRANES 2019; 9:E96. [PMID: 31387240 PMCID: PMC6723071 DOI: 10.3390/membranes9080096] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/09/2019] [Accepted: 07/12/2019] [Indexed: 01/31/2023]
Abstract
The silver-zinc oxide (Ag-ZnO) polyamide thin film composite (PA-TFC) membrane was prepared by interfacial polymerization. The Ag-ZnO/PA-TFC membrane was characterized by attenuated total reflectance fourier-transform infrared spectroscopy (ATR-FTIR) for polyamide functional groups and contact angle for surface hydrophilicity. The Ag-ZnO/PA-TFC membrane was further characterized by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) for morphology and surface roughness, respectively. The performance of the fabricated membrane was investigated using pure water flux, permeability, rejection, flux recovery, and fouling resistance using low molecular weight organic pollutants, 2-chlorophenol (2-CP) and 2,4-dichlorophenol (2,4-DCP). The results were compared to the neat (PA-TFC) membrane. It was observed that incorporation of Ag-ZnO nanocomposites into the PA-TFC membrane improved hydrophilicity, permeation, rejection, and fouling resistance properties of the membrane. The contact angle decreased from 62.8° to 54° for PA-TFC and the Ag-ZnO/PA-TFC membrane, respectively. The presence of Ag-ZnO enhanced permeability of the membrane from 0.9 (Lm-2h-1bar-1) to 1.9 (Lm-2h-1bar-1). Modification of the membrane with Ag-ZnO further showed an enhanced rejection of 2-CP and 2,4-DCP from 43% to 80% and 58% to 85%, respectively. The 2,4-DCP molecules were rejected more than 2-CP due to enhanced repulsive forces from the extra Cl ion. A high flux recovery of about 95% was achieved for the modified membrane compared to 64% for the neat membrane. The improved flux recovery was an indication of enhanced antifouling propensity.
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Affiliation(s)
- Kate Kotlhao
- Faculty of Applied and Computer Sciences, Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark 1900, South Africa
| | - Isiaka A Lawal
- Faculty of Applied and Computer Sciences, Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark 1900, South Africa
| | - Richard M Moutloali
- Faculty of Science, Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa
| | - Michael J Klink
- Faculty of Applied and Computer Sciences, Department of Chemistry, Vaal University of Technology, Private Bag X021, Vanderbijlpark 1900, South Africa.
- Faculty of Applied and Computer Sciences, Department of Biotechnology. Vaal University of Technology, Private Bag X021, Vanderbijlpark 1900, South Africa.
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21
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Gharibshahi E, Saion E, Johnston RL, Ashraf A. Theory and experiment of optical absorption of platinum nanoparticles synthesized by gamma radiation. Appl Radiat Isot 2019; 147:204-210. [PMID: 30953937 DOI: 10.1016/j.apradiso.2019.02.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 01/22/2019] [Accepted: 02/20/2019] [Indexed: 10/27/2022]
Abstract
Platinum nanoparticles were synthesized using the gamma radiolytic technique in an aqueous solution containing Platinum tetraammine chloride in presence of poly vinyl pyrrolidone, isopropanol, tetrahydrofuran and deionized water. The gamma irradiation was carried out in a60Co gamma source chamber and the particle size was found to decrease from 4.88 to 3.14 nm on increasing the gamma radiation dose from 80 to 120 kGy. UV-visible absorption spectra were measured and revealed two steady absorption maxima at 216 and 264 nm in the UV region, which was blue shifted (i.e. toward lower wavelength) with decreasing particle size. By taking the conduction electrons of an isolated particle that are not entirely free, but instead bound to their respective quantum levels, the optical absorption of platinum nanoparticles can be calculated via intra-band quantum excitation for particle sizes similar to those measured experimentally. We found that the calculated absorption maxima of electronic excitations matched the measured absorption maxima well. This finding suggests that the optical absorption of metal nanoparticles commonly applied in nanoscience and nanotechnology can be described accurately by the quantum excitation of conduction electrons.
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Affiliation(s)
- Elham Gharibshahi
- Department of Physics, Faculty of Science, University of Putra Malaysia (UPM), 43400, UPM Serdang, Selangor, Malaysia; Department of Electrical and Computer Engineering, University of Texas at San Antonio (UTSA), One UTSA Circle, San Antonio, Texas, 78249, USA.
| | - Elias Saion
- Department of Physics, Faculty of Science, University of Putra Malaysia (UPM), 43400, UPM Serdang, Selangor, Malaysia
| | | | - Ahmadreza Ashraf
- Department of Physics, Faculty of Science, University of Putra Malaysia (UPM), 43400, UPM Serdang, Selangor, Malaysia
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22
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Jansi Rani B, Ravi G, Yuvakkumar R, Praveenkumar M, Ravichandran S, Muthu Mareeswaran P, Hong SI. Bi 2WO 6 and FeWO 4 Nanocatalysts for the Electrochemical Water Oxidation Process. ACS OMEGA 2019; 4:5241-5253. [PMID: 31459696 PMCID: PMC6648914 DOI: 10.1021/acsomega.8b03003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 03/05/2019] [Indexed: 06/10/2023]
Abstract
Polyvinylpyrrolidone (PVP)-assisted nanocatalyst preparation was succeeded by employing a controlled solvothermal route to produce efficient electrodes for electrochemical water-splitting applications. Bi2WO6 and FeWO4 nanocatalysts have been confirmed through the strong signature of (113) and (111) crystal planes, respectively. The binding natures of Bi-W-O and Fe-W-O have been thoroughly discussed by employing X-ray photoelectron spectroscopy which confirmed the formation of Bi2WO6 and FeWO4. The freestanding nanoplate array morphology of Bi2WO6 and the fine nanosphere particle morphology of FeWO4 nanocatalysts were revealed by scanning electron microscopy images. With these confirmations, the fabrication of durable, long-term electrodes for electrochemical water splitting has been subjected to efficient oxidation of water, confirmed by obtaining 2.79 and 1.96 mA/g for 0.5 g PVP-assisted Bi2WO6 and FeWO4 nanocatalysts, respectively. The water oxidation mechanism of both nanocatalysts has been revealed with the support of 24 h stability test over continuous water oxidation and faster charge transfer achieved by the smaller Tafel slope values of 75 and 78 mV/dec, respectively. Generally, these nanocatalysts are utilized for photocatalytic applications. The present study revealed the PVP-assisted synthesis to produce electrocatalytically active nanocatalysts and their electrochemical water-splitting mechanism which will offer a pathway for research interests with regard to the production of multifunctional nanocatalysts for both electro- and photocatalytic applications in the near future.
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Affiliation(s)
- Balasubramanian Jansi Rani
- Nanomaterials
Laboratory, Department of Physics, and Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Ganesan Ravi
- Nanomaterials
Laboratory, Department of Physics, and Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Rathinam Yuvakkumar
- Nanomaterials
Laboratory, Department of Physics, and Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - M. Praveenkumar
- Electro
Inorganic Division, CSIR-Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Subbiah Ravichandran
- Electro
Inorganic Division, CSIR-Central Electrochemical
Research Institute (CSIR-CECRI), Karaikudi 630003, Tamil Nadu, India
| | - Paulpandian Muthu Mareeswaran
- Nanomaterials
Laboratory, Department of Physics, and Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Sun Ig Hong
- Department
of Nanomaterials Engineering, Chungnam National
University, Daejeon 305-764, South Korea
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23
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Liao C, Li Y, Tjong SC. Bactericidal and Cytotoxic Properties of Silver Nanoparticles. Int J Mol Sci 2019; 20:E449. [PMID: 30669621 PMCID: PMC6359645 DOI: 10.3390/ijms20020449] [Citation(s) in RCA: 431] [Impact Index Per Article: 86.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 01/14/2019] [Accepted: 01/17/2019] [Indexed: 12/16/2022] Open
Abstract
Silver nanoparticles (AgNPs) can be synthesized from a variety of techniques including physical, chemical and biological routes. They have been widely used as nanomaterials for manufacturing cosmetic and healthcare products, antimicrobial textiles, wound dressings, antitumor drug carriers, etc. due to their excellent antimicrobial properties. Accordingly, AgNPs have gained access into our daily life, and the inevitable human exposure to these nanoparticles has raised concerns about their potential hazards to the environment, health, and safety in recent years. From in vitro cell cultivation tests, AgNPs have been reported to be toxic to several human cell lines including human bronchial epithelial cells, human umbilical vein endothelial cells, red blood cells, human peripheral blood mononuclear cells, immortal human keratinocytes, liver cells, etc. AgNPs induce a dose-, size- and time-dependent cytotoxicity, particularly for those with sizes ≤10 nm. Furthermore, AgNPs can cross the brain blood barrier of mice through the circulation system on the basis of in vivo animal tests. AgNPs tend to accumulate in mice organs such as liver, spleen, kidney and brain following intravenous, intraperitoneal, and intratracheal routes of administration. In this respect, AgNPs are considered a double-edged sword that can eliminate microorganisms but induce cytotoxicity in mammalian cells. This article provides a state-of-the-art review on the synthesis of AgNPs, and their applications in antimicrobial textile fabrics, food packaging films, and wound dressings. Particular attention is paid to the bactericidal activity and cytotoxic effect in mammalian cells.
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Affiliation(s)
- Chengzhu Liao
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
| | - Yuchao Li
- Department of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China.
| | - Sie Chin Tjong
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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24
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Freitas de Freitas L, Varca GHC, Dos Santos Batista JG, Benévolo Lugão A. An Overview of the Synthesis of Gold Nanoparticles Using Radiation Technologies. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E939. [PMID: 30445694 PMCID: PMC6266156 DOI: 10.3390/nano8110939] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/22/2018] [Accepted: 10/24/2018] [Indexed: 02/07/2023]
Abstract
At a nano-level, optical properties of gold are unique and gave birth to an emerging platform of nanogold-based systems for diverse applications, because gold nanoparticle properties are tunable as a function of size and shape. Within the available techniques for the synthesis of gold nanoparticles, the radiolytic synthesis allows proper control of the nucleation process without the need for reducing agents, in a single step, combined or not with simultaneous sterilization. This review details and summarizes the use of radiation technologies for the synthesis and preparation of gold nanoparticles concerning fundamental aspects, mechanism, current pathways for synthesis and radiation sources, as well as briefly outlines final applications and some toxicity aspects related to nanogold-based systems.
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Affiliation(s)
- Lucas Freitas de Freitas
- Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP. Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil.
| | - Gustavo Henrique Costa Varca
- Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP. Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil.
| | - Jorge Gabriel Dos Santos Batista
- Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP. Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil.
| | - Ademar Benévolo Lugão
- Instituto de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP. Av. Prof. Lineu Prestes, No. 2242, Cidade Universitária, São Paulo 05508-000, Brazil.
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